WhisperKool Platinum Split Twin (24V Kit) Owner's manual

Brand: WhisperKool

Model: Platinum Split Twin (24V Kit)

Type: Owner's manual

PLATINUM SPLIT TWIN

OWNER’S MANUAL

The Coolest Thing In Wine Storage

24V Thermostat Conversion Kit Option

with regard to the hardware and manual are subject to the restrictions and limitations imposed by the copyright laws of

the USA. Under copyright laws, this manual may not be copied, reproduced, translated, transmitted, or reduced to any

printed or electronic medium or to any machine-readable form, for any purpose, in whole or in part, without the written

consent of WhisperKOOL.

Every effort has been made to ensure that the information in this manual is accurate. WhisperKOOL is not responsible for

printing or clerical errors.

WhisperKOOL reserves the right to make corrections or improvements to the information provided and to the related

hardware at any time, without notice.

Mention of third-party products is for informational purposes only and constitutes neither an endorsement nor a

recommendation. WhisperKOOL assumes no liability with regard to the performance or use of these products.

We manufacture, test and certify 100% of our wine cooling units in

the USA. By sourcing the best components and closely controlling our

manufacturing processes, we can assure the highest-quality,

lowest defect manufacturing rates in the industry.

Conforms to ANSI/UL Std 427

Certied to CAN/CSA Std C22.2 No. 120

TABLE OF CONTENTS

Introduction ............................................................. 2

Before You Start .......................................................... 3

Receiving & Inspecting the System ........................................ 4

Quick Reference Guide

Wall-Mounted Evaporator Unit .......................................... 5

Fully Ducted Evaporator Unit ............................................6

Wall-Mounted Twin Specications ........................................7

Fully Ducted Twin Specications ........................................ 8

Condensing Unit Quick Reference Guide ................................. 9

Preparing the Wine Cellar ................................................. 10

System Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

WhisperKOOL Troubleshooting Guide ..................................... 16

Maintenance Schedule ................................................... 19

Technical Assistance & Accessories ........................................ 20

Installation Terms and Conditions ......................................... 21

with regard to the hardware and manual are subject to the restrictions and limitations imposed by the copyright laws of

the USA. Under copyright laws, this manual may not be copied, reproduced, translated, transmitted, or reduced to any

printed or electronic medium or to any machine-readable form, for any purpose, in whole or in part, without the written

consent of WhisperKOOL.

Every effort has been made to ensure that the information in this manual is accurate. WhisperKOOL is not responsible for

printing or clerical errors.

WhisperKOOL reserves the right to make corrections or improvements to the information provided and to the related

hardware at any time, without notice.

Mention of third-party products is for informational purposes only and constitutes neither an endorsement nor a

recommendation. WhisperKOOL assumes no liability with regard to the performance or use of these products.

Page 2 | 1-800-343-9463

PT 020419

WARRANTY REGISTRATION

In order to activate the warranty of your system, the verication and operational

documentation must be completed by the certied refrigeration technician

installing your system and submitted via mail, fax, or e-mail.

Mail to:

WhisperKOOL

ATTN: Warranty Registration

1738 E. Alpine Avenue

Stockton, CA 95205-2505

USA

Fax to:

209-466-4606

Scan and email to:

[email protected]

INTRODUCTION

Customer Service

Thank you for purchasing a WhisperKOOL cooling system. We strive to provide the highest-quality products and the best

possible customer service. If you have any questions about your system, please call us at 1-800-343-9463 or visit

WhisperKOOL.com.

Using the Manual

This manual is intended to assist in the proper maintenance of the cooling system. In order to ensure the longevity of your

cooling unit, the equipment should be installed as outlined in the technician’s manual. It is also vital to establish a proper care

and maintenance schedule. Please read and review this manual carefully and keep it for future reference.

What is the WhisperKOOL Cooling System?

The WhisperKOOL cooling system is a specialized refrigeration system designed for one purpose only: to maintain the optimal

temperature and humidity levels conducive to the proper storage and aging of ne wines. This system produces minimal in-cellar

noise and has the most lenient exhaust requirements. An exterior housing is required for outdoor condensing unit installations.

How Does the Cooling System Work?

Similar to the air conditioning systems used for homes, the evaporator unit and condensing units are installed in separate

locations and are connected by a refrigerant line set. The evaporator portion is commonly installed in the wine cellar, with the

condensing unit is located either outside or in a remote indoor location that is ventilated. An exterior housing is required for

outdoor condensing unit installations.

Temperature Setting

The system is designed to maintain a cellar temperature of 55°F as long as the ambient temperature does not exceed 110°F.

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Platinum Twin

BEFORE YOU START

1-800-343-9463

1. Inspect all components prior to installation. If damage is found, please contact your distributor or WhisperKOOL Customer

Service at 1-800-343-9463.

2. Each evaporator unit requires a dedicated 115V, 15-amp circuit. The condensing unit requires a dedicated 230V single-

phase 15-amp circuit. Use a surge protector with the unit. Do not use a GFI (ground fault interrupter) line.

3. You are REQUIRED to install a drain line to remove condensation from each evaporator unit.

4. The warranty is not active until a warranty checklist has been received, reviewed, and approved.

5. The system is intended for use in properly designed and constructed wine cellars. Hire a professional wine storage

consultant with a valid contractor’s license to build your wine cellar.

6. WhisperKOOL requires that all split systems be installed by a certified HVAC-R technician only. NATE or equivalent is

recommended.

7. It is vital that the units be set apart and oriented so that the return air from one unit does not recirculate into the supply air of

the other unit.

If you encounter a problem with your WhisperKOOL system, please refer to the Troubleshooting Guide. If you have any further

questions or concerns, or need assistance, please contact WhisperKOOL’s Customer Service at 1-800-343-9463. Please be sure all

testing has been completed prior to contacting Customer Service. Please have your results ready for your representative.

Page 4 | 1-800-343-9463

PT 020419

• (2) ½” x ½” 90° nylon barbed tting

• (1) ½” barbed tee

• (1) Double-D strain relief

• (4) ¾” adhesive cable tie mounts

• (2) Small cable ties

• (4) #8 x 1¾” hex-head screws

RECEIVING & INSPECTING THE SYSTEM

Please leave the unit in its original box until you are ready for installation. This will allow you to move the product safely without damaging it.

When you are ready to remove the product from the box, refer to the installation instructions.

TIP: Save your box and all packaging materials. They provide the only safe means of transporting/shipping the unit.

(1) Filter grille

(1) Duct plenum

Wall-Mounted Master Accessory Kit BoxDucted Master Accessory Kit Box

• (1) Master Platinum Split Twin evaporator unit

• (1) Wall-mounted evaporator installation template

Master Evaporator Box

Condensing Unit Box

• Use caution when lifting and check package for damage.

• Lift only at the designated hand-hold locations on the shipping container, or fully support the unit from underneath. A

shipment may include one or more boxes containing accessories.

• Before opening the container, inspect the packaging for any obvious signs of damage or mishandling.

• Write any discrepancy or visual damage on the bill of lading before signing.

• Allow the condensing unit to sit for 24 hours prior to start-up. The condensing unit can be placed in the installation

location, piped, and evacuated during this time.

NOTE: WhisperKOOL units are manufactured in the USA and tested prior to shipment.

• Review the packing slip to verify contents.

• Check the model number to ensure it is correct.

• Check that all factory options ordered are listed.

If any items listed on the packing slip do not match your order information,

contact WhisperKOOL Customer Service immediately.

Documentation bag (master):

• Platinum Split Twin owner’s manual

• Platinum Split Twin technician’s manual

• R-134a split system warranty checklist

Evaporator installation hardware bag (master)

• (2) ½” x ½” 90° nylon barbed tting

• (1) ½” barbed tee

• (1) Double-D strain relief

• (4) ¾” adhesive cable tie mounts

• (2) Small cable ties

• (4) #8 x 1¾” hex-head screws

• (1) Slave Platinum Split Twin evaporator unit

• (1) Wall-mounted evaporator installation

template

• (1) Evaporator installation hardware bag

Slave Evaporator Box

Check all shipped boxes for the following contents:

(1) Duct plenum

Ducted Slave Accessory Kit Box

(1) Filter grille

Wall-Mounted Slave Accessory Kit Box

• (1) Condensing unit

• (1) Condensing unit accessory kit:

- (1) ¼” lter drier

- (1) ¼” sight glass

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Platinum Twin

QUICK REFERENCE GUIDE

Filter grille

Evaporator unit

Thermostat wire routing for

optional 24-volt thermostat

(NOT INCLUDED)

INSIDE CELLAR

Option 2

THROUGH THE WALL

Option 1

Knockout for wiring

Knockout for drain line

Line set knockout

Mounting keyholes (4)

Line set knockout

Knockout for drain line

Wall-Mounted — Front / Side View

Wall-Mounted — Rear / Side View

Return air

Supply air

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PT 020419

Duct plenum

Return air

Supply air

Fully Ducted — Front / Side View

INSIDE CELLAR

Option 2

THROUGH THE WALL

Option 1

Knockout for wiring

Knockout for drain line

Line set knockout

Mounting keyholes (4)

Line set knockout

Knockout for drain line

Fully Ducted — Rear / Side View

REAR VIEW

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Platinum Twin

WALL-MOUNTED TWIN SPECIFICATIONS

Model

9000 Master Evaporator

(Fan Coil Unit)

9000 Slave Evaporator

(Fan Coil Unit)

Cellar Size Approx. 3000 cu. ft., provided cellar is fully insulated and sealed with proper vapor barrier*

BTU/h w/85°F air enter-

ing the condenser coil

8500 8500

Dimensions 16.1”L x 20.5”W x 15.5”H 16.1”L x 20.5”W x 15.5”H

Refrigerant R-134a R-134a

Voltage Rating 115V (15-amp dedicated circuit required) 115V (15-amp dedicated circuit required)

Weight (lbs) 57 57

Amps

Evaporator: 1 running amp (per unit)

Compressor: LRA 50, RLA 9.3

Evaporator: 1 running amp (per unit)

Compressor: LRA 50, RLA 9.3

Line Set Liquid line ⁄”; suction line ¾” (less than 50 ft.), ⁄” (greater than 50 ft.)

Drain Line ½” ID clear plastic tubing (not provided)

Installation Evaporator units are installed in the cellar.

Thermostat Aftermarket (24V thermostat not included)

Temp. Delta Can maintain a 55°F temperature dierential with up to 110°F condenser air intake temperature

Warranty Two-year limited warranty (parts and labor)

Evaporator unit

*Each cellar is unique and has specic cooling requirements. Heat load calculations should always be performed prior to selecting a cooling unit.

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PT 020419

FULLY DUCTED TWIN SPECIFICATIONS

Duct plenum

Return air

Supply air

Model

9000 Master Evaporator

(Fan Coil Unit)

9000 Slave Evaporator

(Fan Coil Unit)

Cellar Size (cu. ft.) Approx. 3000 cu. ft., provided cellar is fully insulated and sealed with proper vapor barrier*

BTU/h w/85°F air entering

condenser coil

7850 7850

Dimensions

20”L x 20.5”W x 15.5”H 20”L x 20.5”W x 15.5”H

Refrigerant R-134a R-134a

Voltage Rating 115V (15-amp dedicated circuit required) 115V (15-amp dedicated circuit required)

Weight (lbs) 57 57

Amps

Evaporator: 1 running amp (per unit)

Compressor: LRA 50, RLA 9.3

Evaporator: 1 running amp (per unit)

Compressor: LRA 50, RLA 9.3

Line Set Liquid line ⁄”; suction line ¾” (less than 50 ft.), ⁄” (greater than 50 ft.)

Duct Size 8” supply, 10” return (x2)

Drain Line ½” ID clear plastic tubing (not included)

Installation Evaporator units can be installed up to 25 ducted feet away.

Thermostat Aftermarket (24V thermostat not included)

Temp. Delta Can maintain a 55°F cellar temperature with up to 110°F condenser air intake temperature

Warranty Two-year limited warranty (parts and labor)

*Each cellar is unique and has specic cooling requirements. Heat load calculations should always be performed prior to selecting a cooling unit.

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Platinum Twin

CONDENSING UNIT SPECIFICATIONS

Model

9000 Condenser

(Air-Cooled Condensing Unit)

Dimensions 24”L x 18.98”W x 16.16”H

Refrigerant R-134a

HP Ducted system: 3.1, non-ducted system: 3.34

Voltage Rating 230V (15-amp dedicated circuit required)

Weight (lbs) 75

Installation Condensing unit can be installed up to 100 line feet from master evaporator unit.

Warranty Two-year limited warranty (parts and labor)

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PT 020419

The performance and life of your system is contingent upon the steps you take in preparing the wine cellar. Improp-

erly preparing your enclosure or incorrectly installing your unit may cause unit failure, leaking of condensation, and

other negative side eects.

It is highly recommended that you obtain the assistance of a wine storage professional.

Wine storage professionals work with licensed contractors, refrigeration technicians, and racking companies to build

well-insulated, beautiful, and protective wine cellars. WhisperKOOL has put together some useful tips to assist in the

installation process. Our recommendations are meant to act as a guide in the process of building a proper enclosure.

Your intended location may have specic needs which we do not address.

Wall & Ceiling Framing

Build wine cellar walls using standard 2x4 or 2x6 boards and ceiling joists without violating local or state codes in

your area. As a general rule, the thicker the walls and the higher the insulation value, the more consistent your cellar

temperature will be.

Insulation

Insulation is REQUIRED in order to properly use WhisperKOOL products. It is vital that all walls and ceilings be

insulated to keep the cellar temperature as consistent as possible during the summer and winter months. Standard

berglass or rigid foam insulation is normally used in cellar construction; in some cases, “blown-in” insulation is used.

The R-value, or quality of insulation, is determined by the rate at which heat passes through the insulation. The

higher the R-value, the more resistant the insulation is to conducting heat, and the more consistent your wine cellar’s

temperature will be. Using higher R-values in insulation will lower your operating costs and WhisperKOOL unit run

time. (R-13 is the recommended minimum; R-19 is preferred for interior cellar walls, and R-30 for ceilings and exterior

walls.)

Vapor Barrier

Water vapor creates its own pressure, separate from the ambient air pressure, and will intrude into colder/drier

areas. A vapor barrier is REQUIRED in order to prevent the intrusion of water vapor and maintain the correct cellar

temperature and humidity. It is recommended that 6-millimeter plastic sheeting be applied to the warm side of the

cellar walls. The vapor barrier must also be applied to the outside walls and ceiling. If it is impossible to reach the

outside, then the plastic must be applied from within the cellar. The most common method is to wrap the entire

interior, leaving the plastic loose in the stud cavity so the insulation can be placed between each stud. All of the walls

and ceiling must be wrapped in plastic for a complete vapor barrier.

In areas of high humidity, such as Southern and Gulf States, the vapor barrier will prevent inltration of warm moist

air. The moist air can cause mold to form, and standing water in drain pans promote microbial and fungal growth that

cause unpleasant odors and indoor air quality problems. If mold is found, remove it immediately and sanitize that

portion of the unit.

Note: High humidity signicantly increases the heat load on the cooling system.

Any break in the vapor barriers (cut, nail hole, over-lapping, etc.) will cause a moisture leak and must be sealed. The

electric conduit is a “duct” for vapor to travel in. The conduit should be caulked and sealed on the warm air end.

PREPARING THE WINE CELLAR

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Platinum Twin

Door and Door Seal

An exterior grade (1¾”) door must be installed as a cellar door.

It is essential that weather stripping is attached to all 4 sides of

the doorjamb. A bottom “sweep” or threshold is also required.

The door must have a very good vapor seal to prevent warmer

moist air from leaking into the cellar. One of the most common

problems with cooling systems running continually is due to

the door not sealing properly. In cases where glass doors

are used and the room size is close to the recommended

system size, the next larger size WhisperKOOL system

should be used. This will compensate for the insulation loss

due to the lower insulating rating of glass.

Unobstructed Airow

Unobstructed airflow to and from the system is critical for the system’s overall performance and lifespan. Make sure there

is a minimum of three (3) feet of horizontal clearance in every direction around the units (ve feet is ideal). The air blown

by the fans needs to circulate and either dissipate or absorb heat from the space. The system will operate more efficiently with a

greater amount of air to exchange.

NOTE: Avoid attempting to camouflage the units. This will restrict airflow and thus the system’s ability to work efficiently.

NOTE: For ducted systems, every 90° bend in the ducting

causes the system to lose 13 CFM of airflow.

Mounting the Evaporator Units

The evaporator units must be mounted within 18“ of the top of the room in order to achieve sucient cooling. As the

room cools down, the warm air will rise to the ceiling. Mounting the units high in the room will create a consistently cool

environment by capturing the warm air and replacing it with cool air. Mounting the units low in the room will result in

a temperature variation in the room due to the units’ inability to draw warm air from the ceiling of the cellar to the units

themselves, and cold air settling to the oor.

Wine Cellar

Keep Clear

Page 12 | 1-800-343-9463

PT 020419

Ambient Temperature Factor

The cooling system has the ability to cool a wine cellar eciently to 55°F as long as the ambient temperature of the area that it is

exhausting to does not exceed 110°F. Therefore, you want to exhaust the condensing unit in a space which will not exceed 110°F.

Otherwise the system will not have the capacity to keep the wine at a desirable 55°F.

Ventilation

The necessity of dissipating heat away from the condensing unit is critical to the unit’s performance and cannot be overstated. As

the system operates and cools, a greater amount of heat is generated on the condensing side of the system. Adequate ventilation

is required in order to dissipate heat away from the condensing unit. If ventilation is inadequate, the exhaust will heat up the area

or room and adversely aect the systems ability to cool. In some cases, it may be advisable to install a vent fan to dissipate heat

within the exhaust area on the condensing side of the system. However, you must have a fresh air inlet as well.

NOTE: If you are unsure about having adequate ventilation in your install location, please

WARNING! Allowing your system to operate in high ambient temperatures for

extended periods of time will greatly decrease the life of your system and void

your warranty. The cooler the temperature of the air entering the condenser coil,

the more cooling capacity the system has. The less heat gain through the common

wall, the less the electricity consumption.

BACK - EXHAUST SIDE

FRONT - WINE CELLAR

Exterior cellar wall

Evaporator units

Condensing unit

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Platinum Twin

SYSTEM OPERATION

The cooling system is equipped with the hardware needed to support a 24-volt air conditioning thermostat (not included).

Initial Start-Up

Set the thermostat to COOL and fan switch to AUTO. Lower

the setpoint to the desired cellar temperature. (A temperature

of 55°F is the recommended setpoint.) See thermostat

instructions for details.

Normal System Cycle

The thermostat should turn the cooling system on when it

senses a temperature one (1) degree higher than the setpoint.

See thermostat instructions for details.

Anti-Short Cycle

Most thermostats have a safety feature that will prevent

the condensing unit from cycling on and o within a short

period of time. During the anti-short cycle, the condensing

unit will typically remain o for 5-7 minutes. See thermostat

instructions for details.

Fan Operation

If the fan switch on the thermostat is in the AUTO position, it

will run only during the cooling cycle. If the fan switch on the

thermostat is in the ON position, the fan will continuously run

until the switch is set back to the AUTO position.

Operation in Low Ambient Temperatures

The condensing unit comes equipped with a LAC (Low

Ambient Control). The LAC is a three-way modulating valve that

responds to discharge pressure. When the discharge pressure

falls below the valve’s dome pressure, the valve modulates

open to the discharge port which allows discharge gas to

bypass the condenser. Mixing the discharge gas with the liquid

creates high pressure at the condenser outlet, reducing the

ow and causing liquid to backup in the condenser. Flooding

the condenser reduces the area available for condensing.

This reduction in condenser surface area results in a rise in

condensing pressure during cold ambient conditions.

The condensing unit controller is preset at the factory. The

cut-in pressure is preset to 25psi and the cut-out pressure at

15psi. During low ambient temperatures (40°F or below), it will

be necessary to adjust the cut-in pressure to 10-15psi (15psi

is preferred) and the cut-out to 5psi to ensure compressor

startup. See page 14 for instructions on adjusting the cut-in

and cut-out pressures of the condensing unit.

NOTE: To ensure correct system operation, the 24V thermostat

must be placed inside the wine cellar, preferably in a central

location away from any airow.

Page 14 | 1-800-343-9463

PT 020419

Accessing Service Menu

Hold SERVICE for 3 seconds

Cycle through menu options – UP/DOWN

Press SET to see number of alarms

Press SET again to return to menu options

Exit menu - UP and SET

Accessing Alarm Code Information

Press and release ALARM

Cycle through menu options – UP/DOWN

Press SET to see number of alarms

Press SET again to return to menu options

Exit menu - UP and SET

Emerson

™

Electronic Unit Controller

Quick setup and troubleshooting guide

Low Pressure Cut-In Low Pressure Cut-Out

Alarm Description

PoF Keypad locked

Pon Keypad unlocked

P1 Suction probe failure

P2 Condenser probe failure

P3 DLT probe failure

HA High condenser temperature alarm

dLt DLT temperature alarm

dLL DLT lock alarm

HP High pressure trip alarm

HPL High pressure trip lock-out alarm

EE Module Failure

LOC Number of lock-outs

Code Description

StH CompressorStarts –1000 -999999

StL Compressor Starts –0 -999

CHH CompressorHours -1000 -999999

CHL Compressor Hours -0 -999

F1H Fan 1 Hours -1000 -999999

F1L Fan 1 Hours-0 -999

F2H Fan 2 Hours -1000 -999999

F2L Fand 2 Hours -0 -999

Example: If StH=12 and StL=500, the total num-

ber of compressor starts=12,500

Adjusting Low Pressure Settings

Hold DOWN and SET simultaneously for 3 seconds

to enter menu (PSI light will  ash)

Cycle through menu options – UP/DOWN

Select function – SET

Adjust value – UP/DOWN

Store function - SET

Exit menu - UP and SET

Book of Alarms –

to enter alarm menu

Fan light 1 & 2

(Fan cycle units only)

Service – to enter

service menu

Service

Run

time

Active

alarm

Alarm

history

Set – Displays

set point. In

programming

mode, it con rms

an operation

Compressor

Module Restart –

push to reset

the HPL, DLL

lock out faults

(cycle power)

When light is on, feature or component is on or active

For more information visit

EmersonClimate.com/ElectronicUnitController

or call 1-888-367-9950

Note: After 15 seconds of inactivity the controller will revert

to the default display.

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Platinum Twin

Display Likely Causes Other Possible Causes

Controller display remains

blank after applying power

• Unit power not properly applied - check for proper applied voltage

• Power cable harness not plugged in properly or securely into the

back of the controller – check connections

• Power cable miswired – inspect cable, replace if

needed

• Electrical assembly miswired – trace wiring diagrams

Controller displays correctly,

but the green compressor

light is off and the

compressor is not running

• Jumper cable not plugged in properly or securely into the back of

the controller – check connections

• Controller is currently above the cut-in setting – check cut-in and

cut-out settings

• Jumper cable miswired – inspect cable, replace if

needed

Controller displays correctly

and the green compressor

light is on and the

compressor is not running

• Power cable harness not plugged in properly or securely into the

back of the controller – check connections

• Power cable not wired to the contactor or

compressor correctly, check wiring

• Power cable miswired – inspect cable, replace if

needed

Controller  ashes “135” or

“P1”

• Current system pressure is above 135 PSIG – wait for system to

pull down

• Green harness not plugged in properly or securely into the back

of the controller – check connections

• Cable not connected properly with the pressure transducer –

check connections

• Transducer cable miswired – inspect cable, replace

if needed

• Damaged transducer – inspect transducer, replace

if needed

Controller  ashes “P2” on a

unit with fan cycling

• Green harness not plugged in properly or securely into the back

of the controller – check connections

• Transducer cable miswired – inspect cable, replace

if needed

• Check condenser temperature sensor resistance

values against table in AE-1376, Section 8

Controller  ashes “P2” on

a unit without fan cycling

after replacing a controller

• Controller not programmed properly – check parameters in the

advanced menu

Controller  ashes “P3” on a

unit with DLT

• Jumper cable not plugged in properly or securely into the back of

the controller – check connections

• Jumper cable miswired – inspect cable, replace if

needed

• Faulty DLT temperature sensor – check the discharge

line temperature sensor resistance values against

table in AE-1376, Section 8

Controller  ashes “P3” on

a unit without DLT after

replacing a controller

• Controller not programmed properly – check parameters in the

advanced menu

Fans not running on a fan

cycling unit and the fan

lights are not on

• Condensing temperature is currently below the fan cut-in

• Condensing temperature sensor not properly installed – check

installation

• Transducer cable miswired – inspect cable, replace

if needed

• Faulty temperature sensor - check condenser

temperature sensor resistance values against table in

AE-1376, Section 8

Fans not running on a fan

cycling unit and the fan

lights are on

• Power cable harness not plugged in properly or securely into the

back of the controller – check connections

• Power cable miswired – inspect cable, replace if

needed

• Electrical assembly miswired – trace wiring diagrams

Controller  ashes “HP” at

power-up

• Jumper cable not plugged in properly or securely into the back of

the controller – check connections

• High pressure switch is seeing above the cut-out pressure

• For a replacing an -00 controller, ensure that the jumper cable is

the latest revision. It should have a blue wire in the harness. See

replacement instructions for more details

• Jumper cable miswired – inspect cable, replace if

needed

• Faulty  xed Hp switch – inspect switch, replace if

needed

Controller  ashes “HP” or

“HPL”

• System operation causing high discharge pressures, check

system operations

• Bad high pressure switch, verify system pressure

when the pressure switch trips.

• See AE-1376, Section 7.2 for more details

Controller  ashes “DLT” or

“DLL”

• System operation causing high discharge line temperatures,

check system operations

• Faulty temperature sensor - check DLT sensor values

against table in section 8

• See AE-1376, Section 7.1 for more details

Controller  ashing “HPL”

or “DLL”

• System operation causing high discharge pressures (HPL) or

high discharge line temperatures (DLL) repeatedly, check system

operations

• To clear an “HPL” or “DLL” lockout, you can hold the Restart

button for 3 seconds twice, or cycle power to the unit. If using

the reset button, the alarm condition will have to clear (DLT

temperature drops or Hp switch resets), and any minimum off

time will need to complete (5 minutes for the  xed Hp switch)

EmersonClimate.com/ElectronicUnitController

Page 16 | 1-800-343-9463

PT 020419

WHISPERKOOL TROUBLESHOOTING GUIDE

Ice forming on the evaporator units

Possible cause Solution

Evaporator lters or coils are dirty Remove the lters and wash them, then clean the coils with a

vacuum. If coils are very dirty, use a spray bottle with a small amount

of liquid dish detergent or coil cleaner. Spray coils, let set for ve

minutes, then ush with fresh water.

There is something blocking the supply and/or return air

Remove blockage

The evaporator fans are not turning on

Call customer service for details on how to perform the bypass plug

test. If all components run correctly, and the system cools during the

bypass plug test, there is either an issue with the 24V

thermostat conversion kit or the thermostat. Contact customer

service for further action.

If evaporator units continue to ice

Observe ice formation pattern. If only part way up the coil face, the

system could be low on refrigerant. If all the way up, the coils may be

dirty or airow is blocked.

The setpoint is too low Raise setpoint to recommended temperature of 55°F.

Unit does not run/power up

Possible cause Solution

Evaporator units are not plugged in Make sure the units are plugged into an outlet

Power switch not on Turn unit on by pressing the power button on the control

Line voltage rating is incorrect for the system Check line voltage to make sure there is 110V-120V

Thermostat not calling for cooling

Adjust thermostat to a lower temperature

Faulty thermostat or wiring Call Customer Service at 1-800-343-9463

Cellar temperature is too warm

Possible cause Solution

The temperature of the room to which the condensing unit exhausts

exceeds 110°F

Intake temperature needs to drop below 110°F

The system is undersized for the cellar Order correctly sized system

There is something blocking the supply and/or return air on the

evaporator units or the condensing unit

Remove airow obstruction(s)

Evaporator units are mounted too low in the cellar Relocate units so the distance from the ceiling and top of the units is

no more than 18”

One or more of the fans is not turning on

Please contact the installing technician to troubleshoot

Compressor is not turning on

Please contact the installing technician to troubleshoot

Compressor keeps cycling on overload

Make sure all fans are working and there is no airow obstruction

Poor seal around door or other areas requiring a seal (around the

unit, wall joints, etc.)

Make sure there are no air gaps around the door. If door seal is

damaged, replace it.

Thermostat set too high

Adjust thermostat to a lower temperature

Evaporator coils are frosted or iced up Observe ice formation pattern. If only part way up the coil face,

evaporator units could be low on refrigerant. If so, contact your

installing technician to assist with troubleshooting.

System runs constantly

Possible cause Solution

Leaky door seal or poorly insulated cellar Fix leaky door seal and insulate cellar

www.whisperkool.com | Page 17

Platinum Twin

Units leak water

Possible cause Solution

Evaporator units are not level Evaporator units should be level on the wall to prevent leaking

Drain lines clogged or kinked Check drain lines to make sure water can ow freely

Drains are clogged, preventing water from escaping Disconnect drains and clear them out; check drains for blockage

Drain lines do not have a downward slope Fix drain lines so there is a downward slope from the units to the

drains

Coils are iced, causing drain pans to freeze and water to overow Melt ice with blow drier. Soak up with a towel.

System runs but does not cool

Possible cause Solution

Lack of air ow Make sure fans are unobstructed and that the evaporator lters,

evaporator coils, and condenser coils are clean and free of debris

System undersized Contact Customer Service at 1-800-343-9463

Compressor is overheating Shut system o for 1 hour to allow compressor to cool. Turn back on

and check for cooler air ow out. If compressor runs, check for and

clean condenser coil as possible cause of compressor overheating.

If problem repeats, contact you installing technician to assist with

troubleshooting.

Evaporator fan runs but compressor does not

Possible cause Solution

Compressor and/or starting components faulty Please contact the installing technician to troubleshoot

Compressor may have overheated Shut system o for 1 hour to allow compressor to cool. Turn back on

and check for cooler air ow out. If compressor runs, check for and

clean condenser coil as possible cause of compressor overheating.

If problem repeats, contact your installing technician to assist with

troubleshooting.

Thermostat not sending power to Y terminal Call customer service for details on how to perform bypass plug test

24V thermostat conversion kit solenoid relay not working correctly Call customer service for details on how to perform bypass plug test

Compressor runs but evaporator fan does not

Possible cause Solution

Faulty fan motor Please contact the installing technician to troubleshoot

Faulty thermostat Please contact the installing technician to troubleshoot

Compressor short cycles

Possible cause Solution

Master evaporator unit’s thermostat location Move thermostat out of airow

System low on refrigerant charge Please contact the installing technician to troubleshoot

Condensing fan motor/capacitor faulty Please contact the installing technician to troubleshoot

Compressor and /or starting components faulty Please contact the installing technician to troubleshoot

Humidity in cellar too low

Possible cause Solution

Not enough moisture Purchase and place a humidier (or a decorative fountain) in cellar

Page 18 | 1-800-343-9463

PT 020419

System does not power up/run

Possible cause Solution

Batteries on thermostat have lost their charge Change batteries

Thermostat wired incorrectly Check wiring on 24V thermostat and correct

Wiring issue at master evaporator unit Contact Customer Service for troubleshooting

24V transformer in master evaporator unit has failed Contact Customer Service for troubleshooting

Evaporator fans run continuously

Possible cause Solution

Fan switch on thermostat set to "on" Set fan switch to the "auto" position

Fan relay in thermostat or 24V conversion kit stuck on Call Customer Service for details on how to perform the bypass plug

test

Units equipped with the 24V Thermostat Conversion Kit:

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WhisperKool Platinum Split Twin (24V Kit) Owner's manual

WhisperKool Platinum Split Twin (24V Kit) Owner's manual

WhisperKool Platinum Split Twin (24V Kit) Owner's manual

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